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<h2 id="倒数第N个字符串"><a href="#倒数第N个字符串" class="headerlink" title="倒数第N个字符串"></a>倒数第N个字符串</h2><h3 id="题目描述："><a href="#题目描述：" class="headerlink" title="题目描述："></a>题目描述：</h3><p>给定一个完全由小写英文字母组成的字符串等差递增序列，该序列中的每个字符串的长度固定为 L，从 L 个 a 开始，以 1 为步长递增。例如当 L 为 3 时，序列为 { aaa, aab, aac, …, aaz, aba, abb, …, abz, …, zzz }。这个序列的倒数第27个字符串就是 zyz。对于任意给定的 L，本题要求你给出对应序列倒数第 N 个字符串。</p>
<h3 id="输入格式："><a href="#输入格式：" class="headerlink" title="输入格式："></a>输入格式：</h3><p>输入在一行中给出两个正整数 L（2 ≤ L ≤ 6）和 N（≤105）。</p>
<h3 id="输出格式："><a href="#输出格式：" class="headerlink" title="输出格式："></a>输出格式：</h3><p>在一行中输出对应序列倒数第 N 个字符串。题目保证这个字符串是存在的。</p>
<h3 id="输入样例："><a href="#输入样例：" class="headerlink" title="输入样例："></a>输入样例：</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">3 7417</span><br></pre></td></tr></table></figure>

<h3 id="输出样例："><a href="#输出样例：" class="headerlink" title="输出样例："></a>输出样例：</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">pat</span><br></pre></td></tr></table></figure>

<h3 id="示例代码："><a href="#示例代码：" class="headerlink" title="示例代码："></a>示例代码：</h3><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#<span class="meta-keyword">include</span><span class="meta-string">&lt;stdio.h&gt;</span></span></span><br><span class="line"><span class="meta">#<span class="meta-keyword">include</span><span class="meta-string">&lt;math.h&gt;</span></span></span><br><span class="line"><span class="function"><span class="keyword">int</span> <span class="title">main</span> <span class="params">()</span> </span>&#123;</span><br><span class="line">    <span class="keyword">int</span> L, N;</span><br><span class="line">    <span class="built_in">scanf</span>(<span class="string">&quot;%d %d&quot;</span>, &amp;L, &amp;N);</span><br><span class="line">    <span class="keyword">int</span> n = <span class="built_in">pow</span>(<span class="number">26</span>, L) - N;</span><br><span class="line">    </span><br><span class="line">    <span class="keyword">int</span> num[L];</span><br><span class="line">    <span class="keyword">int</span> ind = L;</span><br><span class="line">    <span class="keyword">while</span> (L -- &gt; <span class="number">0</span>) &#123;</span><br><span class="line">        num[L] = n % <span class="number">26</span>;</span><br><span class="line">        n = n / <span class="number">26</span>;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">for</span> (<span class="keyword">int</span> i = <span class="number">0</span>; i &lt; ind; i ++) &#123;</span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;%c&quot;</span>, num[i] + <span class="string">&#x27;a&#x27;</span>);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">return</span> <span class="number">0</span>;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h3 id="继续加油吧🤪"><a href="#继续加油吧🤪" class="headerlink" title="继续加油吧🤪"></a>继续加油吧🤪</h3></article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">Author: </span><span class="post-copyright-info"><a href="mailto:undefined">Bulua</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">Link: </span><span class="post-copyright-info"><a href="http://bulua.gitee.io/2020/06/21/hello-world/">http://bulua.gitee.io/2020/06/21/hello-world/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">Copyright Notice: </span><span class="post-copyright-info">All articles in this blog are licensed under <a target="_blank" rel="noopener" href="https://creativecommons.org/licenses/by-nc-sa/4.0/">CC BY-NC-SA 4.0</a> unless stating additionally.</span></div></div><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="/tags/%E7%AE%97%E6%B3%95/">算法</a></div><div 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href="#%E9%A2%98%E7%9B%AE%E6%8F%8F%E8%BF%B0%EF%BC%9A"><span class="toc-number">1.1.</span> <span class="toc-text">题目描述：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%BE%93%E5%85%A5%E6%A0%BC%E5%BC%8F%EF%BC%9A"><span class="toc-number">1.2.</span> <span class="toc-text">输入格式：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%BE%93%E5%87%BA%E6%A0%BC%E5%BC%8F%EF%BC%9A"><span class="toc-number">1.3.</span> <span class="toc-text">输出格式：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%BE%93%E5%85%A5%E6%A0%B7%E4%BE%8B%EF%BC%9A"><span class="toc-number">1.4.</span> <span class="toc-text">输入样例：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%BE%93%E5%87%BA%E6%A0%B7%E4%BE%8B%EF%BC%9A"><span class="toc-number">1.5.</span> <span class="toc-text">输出样例：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%A4%BA%E4%BE%8B%E4%BB%A3%E7%A0%81%EF%BC%9A"><span class="toc-number">1.6.</span> <span class="toc-text">示例代码：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%BB%A7%E7%BB%AD%E5%8A%A0%E6%B2%B9%E5%90%A7%F0%9F%A4%AA"><span class="toc-number">1.7.</span> <span class="toc-text">继续加油吧🤪</span></a></li></ol></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>Recent Post</span></div><div class="aside-list"><div class="aside-list-item"><a class="thumbnail" href="/2021/11/15/LDA/" title="LDA"><img src= "" data-lazy-src="https://gitee.com/bulua/bulua_img/raw/master/download.jpg" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="LDA"/></a><div class="content"><a class="title" href="/2021/11/15/LDA/" title="LDA">LDA</a><time datetime="2021-11-15T12:54:12.000Z" title="Created 2021-11-15 20:54:12">2021-11-15</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/2021/11/15/PCA/" title="PCA"><img src= "" 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